Hydrostatic drive

US4716730A · kind A · utility

Assignee

• MAN Nutzfahrzeuge AG · DE

Inventors

• Faust Hagin · Munich, DE
• Stefan Martini · Ulm, DE
• Hans Drewitz · Munich, DE

Key dates

• Filing date: Mar 10, 1986
• Grant date: Jan 5, 1988
• Expiry date: Mar 10, 2006

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H61/40
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

In a hydrostatic drive one hydrostatic machine (2 and 4) is adapted for absorbing the sustained braking power or energy. The transmission is furthermore provided with a cooler (9) whose two sides are respectively connected via a threshold pressure valve (7 and 8) with one of two branch ducts (3 and 5) which connect the said hydrostatic machine with a second such machine adapted to act as a drive. The pressure threshold valve is made up of a pressure limiting and check valve.